Cisco Security Advisory – An issue exists in one of the components of the Cisco Management Center for IPS Sensors (IPS MC) version 2.1 during the generation of the Cisco IOS IPS (Intrusion Prevention System) configuration file that may result in some signatures belonging to certain classes being disabled during the configuration deployment process.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/41119/cisco-sa-20051101-ipsmc.txt
Source: https://packetstormsecurity.com/files/41119/Cisco-Security-Advisory-20051101-ipsmc.html